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Down-hole all-directional tidal observation system

An observation system and all-round technology, applied in signal transmission system, measuring device, measuring heat, etc., can solve problems such as uneven distribution of caves, unreasonable layout, and high cost of caves

Active Publication Date: 2011-01-19
INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the uneven distribution of caves, quite a few areas to be monitored have no mountains, or there are mountains but the cost of digging caves is expensive, and it is not possible to dig caves
A blank area for earthquake precursor monitoring is formed, resulting in an unreasonable layout

Method used

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  • Down-hole all-directional tidal observation system
  • Down-hole all-directional tidal observation system
  • Down-hole all-directional tidal observation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0071] 1. Overall layout

[0072] Such as figure 1 , 2 , the steel cable is connected with the hoisting hole (1), and the instrument body (E) is hoisted. At this time, the support column (4) is in a contracted state, and the instrument body (E) can be slowly moved toward the well sheathing pipe (D). placed inside, and the transmission cable (C) is also lowered at the same time. When the instrument body (E) is placed on the bottom of the borehole, the tapered positioning hole (14) of the instrument body (E) and the fixed ball head (15 ) and support the instrument body (E), the steel cable is in a relaxed state, and the support column (4) is also naturally opened, so that the instrument body (E) is tightly connected to the well sheathing pipe (D) Tube wall coupling.

[0073] Turn on the power of the system, start the pendulum locking mechanism, and loosen the pendulums (moving plates) of the two vertical pendulum inclinometers so that they are in a state of free movement. Wa...

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Abstract

The invention discloses an omni-directional tide observation system under the well, which relates to a tide observation system. In the invention, a system mainframe box (B) on the ground (A) is connected with an instrument body (E) which is arranged in a protecting pipe (D) of a drilling well through the transmission cable (C). The structure of the interior of instrument body (E) comprises a hoisting hole (1), a pressing spring (3), a supporting pole (4), a location device (5), a ball head joint (6), a circuit unit, a gravimeter (9), a clinometer (11), a primary leveling device (12) and a precise leveling device (13), which are connected in turn from top to bottom. The invention integrates the gravity instrument with the clinometers, which is put under the well; the gravity solid tide in the upright direction and the horizontal solid tide in two directions can be observed synchronously at the same time and place; the invention provides reliable, precise and continuous observation data; the invention can also be used in a general cave with the qualification of a triangle base.

Description

technical field [0001] The invention relates to a tide observation system, in particular to a downhole gravity and inclined solid tide comprehensive observation system. Background technique [0002] In the study of planetary solid tides, in order to measure the component of the tidal force at a given point, three instruments must be placed along the three axes of the local reference system, and a gravimeter must be placed in the direction of the vertical line pointing to the zenith to measure the tidal force. The vertical component is the gravitational solid tide; inclinometers are installed in two horizontal directions in the horizontal plane to measure the north-south and east-west components of the tidal force, that is, the inclined solid tide. [0003] At present, most of the three components of solid tides are observed with gravimeters and inclinometers at home and abroad. In this way, the vertical component of tidal force is observed more or less at a given point, but ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/40G01V1/52G01V1/20G01V1/38G01D5/24G01K7/20G08C17/02
Inventor 李家明姚植桂温兴卫梅建昌朱仲芬张卫华刘子维张勤耕
Owner INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION
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